37 results about "Fluids retention" patented technology

Embodiments of the present invention generally provide methods, apparatus, and systems for determining void fractions of individual phase components of a multiphase mixture. The void fractions may be determined based on measured parameters of the mixture as a whole, such as differential pressure, bulk velocity of the mixture and speed of sound in the mixture. According to some embodiments, the mixture parameters may be measured using non-intrusive fiber optic based sensors. Various other parameters may also be derived from the void fractions, such as individual phase flow rates, liquid holdup and watercut parameters (for oil and gas mixtures).

A process for producing epoxides, the process including: (a) feeding at least one aqueous alkali and at least one halohydrin to a reactive distillation column, wherein the reactive distillation column includes a feed zone, a top zone disposed above the feed zone, and a bottom zone disposed below the feed zone; (b) concurrently in the reactive distillation column: (i) reacting at least a portion of the halohydrin with the alkali to form an epoxide; and (ii) stripping water and the epoxide from a basic aqueous residue; (c) recovering the water and the epoxide from the reactive distillation column as an overheads fraction; (d) condensing and phase separating the overheads fraction to form an organic overheads fraction including the epoxide and an aqueous overheads fraction including water; and (e) maintaining a liquid holdup per plate in the feed zone at a residence time of 10 seconds or less.

The invention relates to a supercritical water oxidation reactor which consists of a reactor cylinder body (3), an oxidant distribution coil (11) and a heating device (12); the oxidant distribution coil (11) is arranged at the lower part of the reactor cylinder body (3), the heating device (12) is arranged at the bottom part of the reactor (3); wherein a pressure control valve (5) is arranged at the top part of the reactor cylinder body (3), an inorganic salt discharge valve (13) is arranged at the bottom part of the reactor cylinder body (3), an oxidant inlet connection tube (1) and a waste water inlet connection pipe (2) are arranged at the lower part of the reactor cylinder body (3), a clean water outlet connection pipe (6) is arranged at the upper part, wherein the oxidant inlet connection tube (1) is communicated with the oxidant distribution coil (11); and an oxidant tubearray (4) is arranged on the oxidant distribution coil (11). The supercritical water oxidation reactor integrates the reaction process and the separation process to a whole body, thereby having simple equipment structure, stable operation, low investment and maintenance cost, great liquid retention and ability of effectively preventing the deposition of inorganic salts.

A high-efficiency gradient hierarchy complex desulfurizing tower includes a tower body. The tower body tower includes an oxidization and crystallization stage, a coarse desulfurization and dedusting stage, a fine desulfurization and dedusting stage, and a horizontal demisting stage from the bottom up. The oxidization and crystallization stage tower includes a pond and a separation mechanism provided in the pond and separating the pond into an upper area and a lower area. The coarse desulfurization and dedusting stage tower includes a gas distributing board and a multi-layer spray layer that are placed above a gas import, the spray layer being in connection with the pond. The fine desulfurization and dedusting stage tower includes a tube demister, a flushing layer, a film liquid holdup layer, a liquid holdup layer recycling can, the pH of slurry in the liquid holdup layer recycling can being higher than the pH of slurry in the pond.

Portable pneumatic washing device 10 having a body 1 consists of three axially arrayed pipes 11˜13, a transversal valve pipe 14. Pipe 11 impelled by a push rod 6 to pump air into body 1. Distal ends of pipes 12,13 connected to inlet, outlet orifices of the valve pipe 14 respectively. But a proximal end of the pipe 13 securely connected to a hole 15 at a proximal end of the body 1. A control valve 4 installed outside the sidewall of the body 1 switches on/off the inlet orifice 141 of the valve pipe 14. When the inlet orifice 141 open, a liquid retained in the body 1 flows through pipe 12, valve pipe 14 into a telescopic spray pipe 2 of the pipe 13 to spill liquid from the spray head 3 at a distal end of the spray pipe 2 outside the hole 15.

By using a dephlegmator which conducts distillation concurrently with heat exchange within at least one distillation column, or a portion of one distillation column, of a distillation cascade, the quantity of liquid holdup within the distillation apparatus is reduced and the start-up time is shortened. Consequently, the operational costs associated with startup are reduced, and productivity is improved markedly.

Technique of reducing the possibility that a liquid remains in a buffer chamber is provided. There is provided a liquid supply device configured to supply a liquid to a liquid ejection head. The liquid supply device comprises a liquid containing chamber configured to contain the liquid; an air communication path configured to include a first connection portion at one end that is connected with the liquid containing chamber and an air outlet port at the other end that is open to the atmosphere; and a buffer chamber provided in the middle of the air communication path. The air communication path includes a connection path that is located on a downstream side of the buffer chamber in the air communication path in a flow direction of a fluid from the air outlet port toward the liquid containing chamber and is configured to include a second connection portion at an upstream end connected with the buffer chamber. When the first connection portion is exposed to the liquid in the liquid containing chamber, the second connection portion is placed in a lower area in a vertical direction of the buffer chamber.

The invention belongs to the technical field of liquid-phase sampling in a hot cell extraction process in the field of nuclear fuel after-treatment and discloses an instantaneous sampling apparatus for a radioactive bench test. The apparatus is arranged on the bottom of a radioactive bench and includes a sampling pipeline, a first three-way valve, a second three-way valve, an exhaust pipe, a sampling bottle bracket, a fixing sleeve tube, a fixing sleeve tube supporter and a sampling bottle bracket handle. The sampling bottle bracket has a drawable structure and is provided with a sampling bottle trough and the sampling bottle bracket handle. The fixing sleeve tube supporter is arranged above the sampling bottle bracket. The fixing sleeve tube is welded to the fixing sleeve tube supporter. The fixing sleeve tube is arranged on a corresponding position above the sampling bottle trough and can be matched with and connected to the sampling pipeline. The sampling pipeline includes an organic phase sampling tube and a water phase sampling tube. The sampling apparatus has simple structure and is easy to operate, saves space on the bench, enables the bench to be hoisted conveniently, and can effectively avoids retention and overflow of a sample liquid.

The invention provides a coater ensuring constant feeding of a coating solution and reducing vibration generated during movement of the slit nozzle. A tube-separating pump (12) is arranged as a coating solution supplying pump at the central part of the width direction of an anterior connecting girder (7) based on a coating direction as a reference. The tube-separating pump (12) is operated by applying a symmetrical pressure on a circumferential part of the tube by a non-compressed fluid. The tube-separating pump (12) is slantwise fixed to a wedge member (13) on the connecting girder (7) in such a manner that outlet thereof is arranged upwards and inlet thereof is arranged downwards. Gas is prevented from entering by this slantwise configuration. And the configuration by which liquid retention is prevented at the outlet and the inlet is provided which is advantageous for preventing dropping, and the like.

The invention discloses an atmospherical pressure filling machine capable of preventing dropping liquid from being sucked back. The atmospherical pressure filling machine structurally comprises a feeding hopper, a fixing seat, a fixing frame, a worktable, a filling head and a connection cavity; the feeding hopper is mounted on the fixing seat and communicates with the connection cavity; the filling head is arranged at the bottom of the connection cavity and arranged in the due north direction of the worktable, the filling head and the worktable are matched, and the fixing frame and the fixingseat are mechanically welded; and the fixing frame is fixedly connected with the worktable. The atmospherical pressure filling machine has the beneficial effects that a flow guiding block is arrangedin a middle cavity, and thus the liquid reaching the flow guiding block is guided under the effects of a guiding plate and a guiding block to achieve the effect of preventing the filling liquid from being retained; a rotating plate drives a telescopic plate to move along with the rotating plate when rotating along the center axis to achieve opening-closing control over an air vent; and with the help of the air vent, air pressure balance of the middle cavity and the outside can be achieved when filling is stopped, and thus the purpose of preventing backflow and suck-back of the liquid due to the fact that the air pressure in a filling pipe is smaller than the air pressure outside the pipe is achieved.

The invention discloses a submersible pump machine facilitating control of a motor power supply system. The submersible pump machine structurally comprises a base, a pump body, a water inlet pipe anda water outlet pipe, the pump body is vertically welded to the top of the base, the water inlet pipe is obliquely installed on the right side of the pump body, the water outlet pipe is horizontally fixed to the right side of the top end of the pump body, the pump body is provided with a bearing, a water inlet, blades and a pushing mechanism, the bearing penetrates through the center of the top ofthe pump body, due to the fact that the water inlet pipe is inclined, after underground water pumping is stopped, liquid lower than the blades in the pump body cannot be discharged to the water inletpipe in time, the liquid lower than the blades at the bottom in the pump body is pushed upwards and diffused through the pushing mechanism, so that long-term retention of the liquid at the bottom in the pump body is reduced, and the use time of a submersible pump is prolonged, and due to the fact that liquid diffuses along with the blades and is retained on the inner wall of the pump body, so thatgas in a supporting block diffuses towards the interior of the pump body through movable fit of the supporting block and a push plate, air flowing in the pump body is accelerated, and evaporation ofmoisture of the liquid retained on the inner wall of the pump body is accelerated.

The invention relates to the technical field of vegetation protection structures, in particular to a multi-scene-based vegetation roll protection structure which comprises a vegetation roll, an anchoring structure for fixing and a water supply system connected with the anchoring structure, the water supply system is connected with the vegetation roll, and the anchoring structure is fixedly mounted on the peripheral side of the vegetation roll. The plant growing roll sequentially comprises a supporting bottom layer, a liquid adsorption layer, a liquid flow blocking film, liquid supply cloth, a liquid supply layer and a liquid retention film from bottom to top, and a plurality of liquid storage bins with one ends open are formed between the supporting bottom layer and the liquid flow blocking film. The anchoring structure and the water supply system are arranged, so that efficient fixation of the greening area can be bi-directionally guaranteed, and the overall moisture absorption degree is improved. The invention provides a vegetation roll protection structure based on multiple scenes. The problem that in the prior art, firm installation and timely water supplementing cannot be achieved in different environments is solved.

The invention discloses a multi-channel liquid detection and observation device for fluid observation, the device comprises an observation device and a detection device, the right side of the observation device is provided with the detection device, the top of the observation device is provided with a water tank body, the top of the water tank body is fixedly provided with a funnel, and the bottom of the funnel is provided with a liquid inlet pipe; a sealing plate is arranged at the top of the liquid inlet pipe, a buffer pipe is arranged in the observation device, a liquid outlet pipe is connected to the bottom of the buffer pipe, an adjusting valve is arranged at the joint of the buffer pipe and the liquid outlet pipe, the adjusting valve is composed of a movable rod, a sealing ball, a water leakage hole and a rotary buckle, and a liquid collecting groove is formed in the bottom of the observation device. According to the multi-channel liquid detection and observation device for fluid observation, through the S-shaped buffer pipe, when fluid passes through, the speed is decreased, an outlet in the bottom of the buffer pipe is sealed through the adjusting valve, the liquid is retained in the buffer pipe, or the size of the outlet is adjusted, so that the liquid slowly flows out, and observation can be conducted at any time.

The invention relates to the technical field of heat exchangers, in particular to an unpowered air conditioner. The unpowered air conditioner comprises liquid collecting pipes and multiple heat dissipating pipes. One ends of the multiple heat dissipating pipes are connected with a first liquid collecting pipe, and the other ends of the multiple heat dissipating pipes are connected with a second liquid collecting pipe. Inner cavities of the heat dissipating pipes communicate with inner cavities of the first liquid collecting pipe and the second liquid collecting pipe. A condensation portion bywhich cooling can be accelerated is arranged in the accommodating cavity of each heat dissipating pipe. A cooling liquid evaporated by heat ascends through a first channel, a second channel and a third channel, and cooling is conducted. In the ascending process, steam subjected to cooling is transformed into a liquid and stagnates in circular arc-shaped second segments of the first channel and thethird channel. Intensity of pressure in the channels is increased through evaporated cooling liquid so that film sheets installed at liquid drainage ports are opened, and the liquid flows out from the liquid drainage ports. The drained liquid drips onto the outer sides of a first connecting wall and a second connecting wall of a condensation cavity below, secondary cooling is conducted on the first connecting wall and the second connecting wall below, circulation is conducted in sequence, and steam in the condensation cavity is cooled in an accelerated manner and transformed into a liquid.

The invention discloses a resistance type level instrument with an adjustable dielectric resistance area, which structurally comprises a pipe body, a fixed flange and a liquid discharge pipe, the fixed flange is horizontally welded on the back surface of the pipe body, and the liquid discharge pipe is vertically arranged at the bottom end of the pipe body. After the height of the liquid is reduced, the discharging speed of the liquid in a liquid inlet pipe of the electric contact is low, liquid in the liquid inlet pipe is pushed to the right end of the liquid inlet pipe through airflow diffusion in an elastic ring of a pushing mechanism, liquid retention in the liquid inlet pipe is reduced, flowing of the liquid in the pipe is reduced, contact between the liquid and an electric contact isreduced, the electric contact is powered on to give a prompt due to a small amount of current in the liquid, and liquid height measurement is facilitated. Due to the fact that liquid stays on the outer wall of the elastic ring, the bearing capacity of the pushing mechanism is increased, the moving speed is reduced, the liquid staying on the outer wall of the elastic ring is drained and dischargedthrough the liquid discharging holes of the clamping plate, the bearing capacity of the pushing mechanism is better reduced, the moving speed of the pushing mechanism is increased, and pushing and discharging of the liquid in the liquid inlet pipe are accelerated.

The invention relates to the technical field of low-temperature-resistant storage tanks, and discloses a movable low-temperature-resistant liquid storage device and method. The movable low-temperature-resistant liquid storage device comprises an outer tank, a heat preservation layer, a pearlife layer and an inner tank, the heat preservation layer is fixedly arranged in the outer tank, the pearlifelayer is laid in the heat preservation layer, the inner tank is fixedly arranged in the pearlife layer, a first through hole is formed in the upper end face of the inner tank, a feeding pipe is fixedly connected to the inner wall of the first through hole, the feeding pipe penetrates through the pearlite layer and the heat preservation layer and extends to the outer side of the outer tank, a sealing plug is fixedly arranged on the pipe wall of the feeding pipe, supporting columns are fixedly connected to the four corners of the bottom of the outer tank correspondingly, universal wheels are fixedly connected to the lower end faces of the supporting columns, a T-shaped pipe is fixedly connected to the left side of the outer tank, and a limiting block is fixedly connected into the T-shaped pipe. A liquid storage tank is convenient to move, and the situation that the storage tank is broken due to the fact that liquid is retained in a drainage pipe is prevented.

The brass valve comprises a valve body, a valve element is arranged in the valve body, an operation part is arranged on the valve body, a water inlet, a water outlet and a water drainage opening are formed in the valve body, and a water drainage pipeline is arranged in the valve body; one end of the drainage pipeline extends out of the valve body to form a water outlet; a first communicating pipe and a second communicating pipe are fixed in the valve body, located on the two sides of the valve body and matched with the valve body respectively. The first communicating pipe extends out of the valve body to form a water inlet, and the second communicating pipe is communicated with a drainage pipeline; a rubber sliding block is arranged in the drainage pipeline, and a spring is fixed to the position, back to the water outlet, of the rubber sliding block. A bypass pipe is arranged on the communicating pipe, the diameter of the bypass pipe is smaller than that of the second communicating pipe, the bypass pipe is communicated with the drainage pipe, the drainage port is located below the drainage pipe, and a water outlet hole is formed in the bottom end of the drainage pipe. According to the brass valve, liquid can be prevented from being retained in the valve body, so that the valve body is frozen to crack in a cold environment.